Improvement in gas-machines



'ZSheetsmSheet 1.

AaRAND.

GAS-MLACENE.

Patente Aug. l5, 18716K.

INVENTQR Z Sheetsw-Sheen'. A. C. RAND. GAS-MACHINE.

.Attorneys neonzo o. nenn, or Minnenroms, Minnesorfi.

iMPRGJEMENT'iN GASQMACHlNi-IS.

ySpecircaflion forming peri; of LettersPetent No* hlio, dated August 15, i876; application filed May 29, 1876.

To nii y:1J/rom muy con cern:

`S'Be il; known that I, Alonzo C, RAND, of Minneapolis, in the county of Hennepin, and in the Steige ci' Minnesota, have invented ceriein new and useful Improvements lin Ges- Meehines; and do herebyr declare thatihe ollowing fie full, clear, and lennui description thereof, reference hei'ng'hud to the eoeornpu. nfl-'ing drawings, und ,to the letters of reference vthereon, marking e part of this speciheer-ien.

The nei-iure orny invention .consists iu im z pperetns' for furnishing air to carhureiers for gesuuenufucenriug, and any other purpose Where e'eonstenipressure of nir is required, ,as will be hereinafter-more fully set forti In order to enable'ohers skilled in the art which. my invention nppertuius to lnnle and use lehe saine, I will now proceed to describe iis'construction und operation, referring to the annexed dre-wings, inwhich- 4 Figure l is e side elevation of my machine.

2 is e vertical section of the suine.

A represents .the nir-pump, constructed like en ordinary greviizniin gne-holder, end placed on e,- suitehle freine-Work, C is `.Ehe recepmele for the air, also constructed like au ordi.- nery gas-hold r, and provided with 'the pipe D, .leedingro ecurhureter. `Eis the supply Welser-pipe. G G ure vulves regulating the supply and exhaust, respectively, ofthe wafer. H is u pivoted tilting \veighi,con1ieoted to u shaft, c, one end ol which projects into u arose-heed, thuis connects he stems of the two valves Ti". vThis tilting' Weight, is operated by the reir-pump A, io the upper edge oi' which. is utieched e rod, b. Flhe lower end oi'- this rod enters e, sioited arm, el, attached to the shaft u.. "Ehe rod I; ie provided with we pins, c w, which ixnpinge upon the arm i es the holder uecenr e und descends, so than; when the Weight is carried pest the cenner it drops by its own gravity, and opens the supply-vulve G fulhand closes tight the exhaust G', or, vice versa. 'When the supply-relire G is open vthe iva-ter posses Jzhrough n pipe, f, underneath the airpi'nnp inio the bottom oi' e cylinder, J, placed in the center on the hoiiorn of the pump, und in cylinder the water acts against the lower end of u piston, K, placed therein. .The cylinder J being open et its upper end, the pis ton or pistou-rod 'passes .up through it, end lcomes iu Contact with the under side or top of the holder with sulcientv force or power to lii'/` the seme. L is the air-inlet pipe Within the pump, provided WithaJ vulve, e, at its upper end. As the'holderescends air is supplied through the pipe L, the valve'keprevening the return of the air, and when `the holder has attained its maximum height it actuaires the tilting weight, thereby closing ihe supply- In order 'to 'prevenna-iucreased pressure Aof zur in the holder G, or, in veinher Words, to pre-y serve e uniform pressure therein, the upper end of the air-inlet pipe M wihin the holder is provided with u conical valve, m, the stem 'of which isuutteched to the crown of the holder, 'so that; when the holder hes nearly reached its -rnaximuxn height the conical valve partially closes the inlet, which is entirely closed when lthe holder' has reached its full height. As soon as the holder of the pump A has descended to its lowest point the tilting weight is thrown over tothe other side, closing the exhaust and opening plie supply vulve, when the Waiter again enters the cylinder J end operates as before. l

Thus e const-(intend uniform blast of air is furnished. The carhureter, u very few gallons of water being sufficient to furnish nu ordinarysized'dwclling with gus en entire evening.v

This machine can lie-constructed el', corn'- puretively smell expense. Il; is automatic, not having to be wound' up, and therefore' there is no danger of running downwhile the lights are burning, which is often the case with other machines mede for a like purpose. Its partsere so simple than it is non liable to get; out of order. Though speciali y designed for furnishing eir to oerburel'ere, it; may equally es well be used for an y and all purposes Where a; moderatel blass of air is required.

The Water-cylinder J may he operated out# -side of the pump, the holder of the punir` )fr ing lifted by :L lever connetc with im@ piaeon in the cylinder.

11a-ving' thus fully described my m'eu'pionf, what I claim as new, :wd dee'e to mame by l. The combination of' the glavtmhg puzza? or holdePA, Water-supply E, valvas; f GQ www head I, Shaft: a, with tilting Weight E and S1023 tod mm LZ, and the rod b, attached wth@ lmi'ier and provided with pim; w y, Azubtauta'ijg' as and for the purpses herein :fm-th.

L. The combnamin @if abe-e pump m hmmm? A, water-supply Ef, vavs Gf, gigi@ jf, inflar J, Pisten K, and Waste or @Emmet pips 

